Find a power series representation for the function. (Give your power series representation centered at x = 0.) x2 f(x) = x4 16 ω-Σ(- . (x) 16 n0 Determine the interval of convergence. (Enter your...

I can't seem to find the power series function of this equation no matter what i try. What am I doing wrong.

Extracted text: Find a power series representation for the function. (Give your power series representation centered at x = 0.) x2 f(x) = x4 16 ω-Σ(- . (x) 16 n0 Determine the interval of convergence. (Enter your answer using interval notation.)